Tennessee Code Title 5. Counties § 5-3-102

(a) Upon receipt of a petition, signed by qualified voters of any one (1) county, equal in number to at least twenty-five percent (25%) of the number of votes cast in the county for governor in the last general election, requesting the consolidation of the county or parts of the county with one (1) or more adjoining counties, the state consolidation committee shall appoint a county consolidation committee for the county.

(b) The county consolidation committee shall be composed of the county mayor and the county trustee of the petitioning county, the county mayors of the adjoining counties, and five (5) signers of the petition designated by the governor.